Παραπομπή APA

Raje, S. (1969). Black gold: An intoduction to petroleum. Somaiya Publications.

Παραπομπή Chicago Style

Raje, Sudhakar. Black Gold: An Intoduction to Petroleum. Bombay: Somaiya Publications, 1969.

Παραπομπή MLA

Raje, Sudhakar. Black Gold: An Intoduction to Petroleum. Somaiya Publications, 1969.